It looks like this choice was mortog's
I agree with searching strings, so regex should work too
Local $array[4] = ["1", "3", "6", "9"]
Local $string = "1,2,3,4,5,6,7,8,9"
Local $bFound = False
For $i = 0 To UBound($array)-1
If StringRegExp($string, '(^|,)' & $array[$i] & '(,|$)') Then
$bFound = True
ExitLoop
EndIf
Next
MsgBox(0, "Return", "Found = " & $bFound)